| ( | x | − | 717 100 | ) | ÷ | ( | x | + | 2 | ) | = | 47 100 |
| 方程两边同时乘以: | ( | x | + | 2 | ) |
| ( | x | − | 717 100 | ) | = | 47 100 | ( | x | + | 2 | ) |
| x | − | 717 100 | = | 47 100 | ( | x | + | 2 | ) |
| x | − | 717 100 | = | 47 100 | x | + | 47 100 | × | 2 |
| x | − | 717 100 | = | 47 100 | x | + | 47 50 |
| x | − | 47 100 | x | = | 47 50 | + | 717 100 |
53 100 | x | = | 47 50 | + | 717 100 |
53 100 | x | = | 811 100 |
| x | = | 811 100 | ÷ | 53 100 |
| = | 811 100 | × | 100 53 |
| = | 811 | × | 1 53 |
| x | = | 811 53 |
| x | = | 15.301887 |